/* Copyright (c) 2006 Brandon Aaron (http://brandonaaron.net)
 * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php) 
 * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
 *
 * $LastChangedDate: 2007-07-22 01:45:56 +0200 (Son, 22 Jul 2007) $
 * $Rev: 2447 $
 *
 * Version 2.1.1
 */
(function($)
{
	$.fn.bgIframe=$.fn.bgiframe=function(s)
	{
		if($.browser.msie && /9.0/.test(navigator.userAgent))
		{
			var iframe = document.createElement("iframe");
			iframe.setAttribute("class", "bgiframe");
			iframe.setAttribute("frameborder", "0");
			iframe.setAttribute("style", "display:block;position:absolute;z-index:-1;filter:Alpha(Opacity=\'0\');top:expression(((parseInt(this.parentNode.currentStyle.borderTopWidth)||0)*-1)+\'px\');left:expression(((parseInt(this.parentNode.currentStyle.borderLeftWidth)||0)*-1)+\'px\');width:expression(this.parentNode.offsetWidth+\'px\');height:expression(this.parentNode.offsetHeight+\'px\');");
			this.insertBefore(iframe, this.firstChild);
		}
		else
		{
			s=$.extend({
				top:'auto',
				left:'auto',
				width:'auto',
				height:'auto',
				opacity:true,
				src:'javascript:false;'
			}, s||{});
			
			var prop=function(n)
			{
				return n&&n.constructor==Number?n+'px':n;
			},
			
			html='<iframe class="bgiframe"frameborder="0"tabindex="-1"src="'+s.src+'"'+'style="display:block;position:absolute;z-index:-1;'+(s.opacity!==false?'filter:Alpha(Opacity=\'0\');':'')+'top:'+(s.top=='auto'?'expression(((parseInt(this.parentNode.currentStyle.borderTopWidth)||0)*-1)+\'px\')':prop(s.top))+';'+'left:'+(s.left=='auto'?'expression(((parseInt(this.parentNode.currentStyle.borderLeftWidth)||0)*-1)+\'px\')':prop(s.left))+';'+'width:'+(s.width=='auto'?'expression(this.parentNode.offsetWidth+\'px\')':prop(s.width))+';'+'height:'+(s.height=='auto'?'expression(this.parentNode.offsetHeight+\'px\')':prop(s.height))+';'+'"/>';
			this.insertBefore(document.createElement(html), this.firstChild);
		}
	
		return this;
	};
})(jQuery);